Unix Timestamp Converter Online (Free)
Convert Unix timestamps to human-readable dates and back. Free online converter — runs locally in your browser.
Unix timestamps count seconds (or milliseconds) since January 1, 1970 UTC. APIs, databases, and logs often use them — converting to local time makes debugging much easier.
Seconds vs milliseconds
- 10-digit values are usually seconds (e.g. 1710000000)
- 13-digit values are usually milliseconds
- JavaScript Date.now() returns milliseconds
- Python time.time() returns seconds as a float